Device for automatically grinding valves for combustion engines



Jul 29', 1924. 1,503,417

1. B. GILBERT DEVICE FORYAUTOMATICALLY GRINDING VALVES FOR COMBUSTION ENGINES Filed April 9, 1921 Patented July 29, 1924.

,UNHTED STATES PATENT oFFi-c ISRAEL B. GILBERT, on cINoINNA'rI, onio, ASSIGNOR on ONE-HALF T01 onLINa'.

CUTLER, or CINCINNATI, oHIo.

I)EVIGE non AUTOMATICALLY GRINDING vALvEs non coM s'r o n c -ns.

Application filed April 9, 1921. Serial No. 460,020.

To all whom it may concern:

Be it known that I, IsRAn B. GILBER a citizen of the United States of America, and; a' resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented a new and useful Improvement in a --Device for Automatically Grinding Valves for Combustion Engines, of which the following. is a specification,

An object of my invention is to provide meanswhereby the valves of enginesmay be automatically ground and cleaned during the operation of the engine.

Another object of my invention is to provide means for the purpose stated, which may be readily placed in and out of opera tive condition.

Another object is to provide means for the purposes stated that are simple in construction and operation and subject to a minimum of wear.

These and other objects are attained by the means described herein and disclosed in the accompanying drawings, in which Fig. 1 is a fragmental elevation of a combustion engine having a device embodying my invention mounted thereon and opera tive upon, the valve.

Fig. ,2 is an enlarged sectional view on line 2-2 of Fig. 1.

Fig.3 is, a sectional view on line 3 3 of Fi -2-v i ig. A is an enlarged sectionalview on-line h-r ln Figl- Fig, 5. is a view similar to. Fig. 2, showing a modified form of-my. invention.

My invention comprises a series of studs a mounted on a cam shaft A of a combustion engine, each of which is adapted to oscillate the steinof-one of the valves B. The oscillating motion of the valve serves to grind the valve face 6 upon the valve seat Z2 Thecam shaft A is of thetype and kind ordinarily used in combustion engines, having mounted upon it the' cams a adapted to actuate the inlet and exhaust valves such as The studs (1, are mounted upon the cam shaft adjacent the cams a. It is preferable to form threaded ways (1 in the cam shaft in which the studs a; are adapted to be ad- "ustably seated. Suitable means such as the loo nuts c 'are provided to secure the studs e a iaita e d e ti ee A valve plunger 0 is adapted to engage the cams a, as is common in/the art, and to be longitudinally reciprocated by means of the cams 6i and the spring S, adapted to' yieldingly retain the valve plunger upon the cam. The valve tappet screw 0 is adj ustably mounted upon the valve plunger and is adapted to be secured thereupon in its adjusted position by means of a lock nut c, as

is common in the art. The slots 0 are formed in the top of the valve plunger adapted to accommodate lugs cl formed on the link D mounted upon the valve stem Z). The link D may be madein any shape and form provided it does not interfere with the relation of the valve tappet screw 0 and the valve stem I). The link serves merely to transmit rotatory or oscillatory motion from the valve plunger O to the valve stem b. I have shown the link as comprising a top plate cl having a bore d adapted to accommodate the valve stem 1) secured thereto by the pin 03 and a bottom plate d having a central bore (Z adaptedto accommodate the upper end of the valve plunger andin which the upper end of the valve plunger can be freely reciprocated longitudinally. The branches 0? connect the top and bottom plates. 7 p I he ve m P0 1 119 pp r end of which is mounted the valve B, is adapted to engage at its'lower end upon the valve tap P t adjusting Screw ie swminoni 1 the art." washer Z) is mounted upon the stem 7) and forms an abutment ior one end of the p th o e and of wh ch spring gages part of the combustion chamber hous- E. The lower end of the valve plunger C has a bore 0 within which is mounted a rod F. Normally the rod extends parallel with the cam shaft A and is yieldinglyretained in this position by means of a spring Gr ser th j reeee 9 as.

other end secured upon a lever J 2 mounted at any suitable place accessible to the op erator, whereby it is possible to retain the valve plunger and rod F in such positions that the studs a will not engage the rods.

In Fig. 5 there is shown a modified form of device embodying my invention. In this modified form a secondary rod F is mounted upon the valve plunger G and extends from the plunger at an angle to the primary rod F at a place substantially opposite to the rod F. A secondary stud A is mounted upon the cam shaft A and is adapted to engage the secondary rod F after the primary stud a has become disengaged from the primary rod F. In this modified form the spring G is dispensed with, so that the primary stud aand the secondary stud A alternately actuate the valve plunger in opposite directions. The arm H and the cable attached thereto may be employed with either construction.

The operation of my device is as follows: The cam shaft A is revolubly actuated by the engine. whereby the cams serve to longitudinally reciprocate the valve B, thereby alternately seating and unseating the valve. During certain portions of the cycle of the cams the valves engage their seats, and during this portion of the cycle, the studs a eugage the rods F and revolubly actuate the valve plungers as the studs move by the rods F. After the disengagement of the studs from the rods, the springs G return the rods to their normal positions. This oscillatory motion of the valve plunger is transmitted through the link D to, the valve stem and valve, whereby the valve is oscillated upon its seat and thereby grinds'and cleans both itself and its seat. In the modified form the spring G is dispensed with, wherefore the engagement of the primary stud with the primary rod F serves to move the secondary rod F to a position parallel with the cam shaft A and in which the secondary rod will be engaged by the secondary stud. The secondary stud in turn operates the valve plunger so as to return the primary rod to its normal position in parallelism with the cam shaft A, in

engaged by the primarystud.

The cleaning mechanism is rendered in operative-by retainingthe rods in such position that they willnot be engaged by the studs, this being accomplished by means of 'the c'able J and the lever J What claim is: v

'1.. The combination with a combustion engine ,of means adapted to oscillate the valves upon their seats during the operation of theengine, whereby the valves and valve seats are cleaned.

2. The combination with a combustion engine having means to alternately seat and unseat the valves controlling the intake and exhaust of the combustion chamber, of means actuated by said first mentioned means to oscillate the valves upon their seats, whereby the valves and valve seats clean and grind one another.

The combination with a combustion engine having valve seats and valves adapted to be actuated longitudinally by means of cams, of studs mounted adjacent the cams adapted to oscillate the valves upon the seats.

4. The combination with a combustion engine having a cam shaft, and valves adapted to be reciprocated in relation to the cam shaft, of a valve plunger engaging'the cam shaft adapted to actuate the valve; a link adapted to transmit rotary motion from the valve plunger to the valve, and means actuated by the cam shaft adapted to oscillate the valve plunger in opposite directions in alternate sequence when the valve is on its seat.

5. The combination with a combustion engine having a cam shaft, and valves adapted to be reciprocated in relation to the cam shaft, of a valve plunger engaging the cam shaft adapted to actuate the valve, a link adapted to transmit rotary motion from the valve plunger to the valve, means actuated by the cam shaft adapted to oscillate the valve plunger in opposite directions in alternate sequence, and means to render the last mentioned means inoperative.

6. The combination with a combustion engine having a cam shaft and valves adapted to be reciprocated in relation to the cam shaft of a valve plunger adapted to be reciprocated in alignment with the valve engaging the cam shaft, a link mounted upon the valve stem adapted to transmit rotary motion from the valve plunger to the valve stem, a rod mounted on the valve plunger adapted normally to assume a position adjacent the cam shaft and in substantial parallelism with the axis of the cam shaft, means yieldingly retaining the rod in its normal position, and an adjustable stud mounted upon the camshaft adapted to engage the rod and to move the rod from its v normal position. which position the primary rod Wlll be again 7. The combination with a combustion engine having a cam shaft and valves adapted to be reciprocated in relation to the cam shaft, of a valve plunger adapted to bereciprocated in alignment with the valve engaging the-cam shaft, a link mounted upon the valve stem adapted to transmit rotary motion from the valve plunger to the valve stem, a rod mounted on the valve plunger adapted normally to assume a position adjacent the cam shaft and in substantial parallelism with the axis of the cam shaft,

means yieldingly retaining the rod in its normal position, an adjustable stud mounted upon the cam shaft adapted to engage the rod and to move the rod from its normal position, and means to retain the rod in an inoperative position.

- 8. The combination with a combustion engine having a cam shaft and valves adapted to be reciprocated in relation to the cam shaft, of a revoluble valve plunger engaging the cam shaft and adapted to actuate the valve, a link mounted upon the valve stem and adapted to transmit rotary motion from the valve plunger to the valve stem, and means mounted upon the valve plunger and the cam shaft adapted to oscillate the valve plunger in opposite directions in alternate sequence.

9. The combination with a combustion engine having a cam shaft and valves adapted to be reciprocated in relation to the cam shaft, of a revoluble valve plunger engaging the cam shaft and adapted to actuate the valve, a link mounted upon the valve stem and adapted to transmit rotary motion from the valve plunger to the valve stem, means mounted upon the valve plunger and the cam shaft adapted to oscillate the valve plunger in opposite directions in alternate sequence, and means adapted to render the last mentioned means inoperative.

10. The combination with a combustion engine of means adapted to oscillate the valves upon their seats during the operation of the engine, wherebythe valves and valve seats are cleaned, and means to render the first mentioned means inoperative.

11. The combination with a combustion engine having valves adapted to be actuated longitudinally by means of cams, of studs mounted adjacent the cams adapted to oscillate the valves, and means yieldingly resisting oscillation of the valves.

12. The combination with a combustion engine having valves adapted to be actuated longitudinally by means of cams, of studs mounted adjacent the cams, and means operative on the valves adapted to engage the studs and be oscillated thereby.

13. The combination with a valve and seat therefor, of means for yieldingly retaining the valve upon its seat, means to oscillate the valve upon its seat, and means to render the oscillating means inoperative upon the valve.

14. The combination of a poppet valve and means for oscillating saidevalve when it is seated.

15. A valve, means for reciprocating said valve, and means for oscillating said valve when it is seated.

16. A valve, means for reciprocating said valve, means for oscillating said valve, and means for rendering said oscillating means ineffective.

17. A poppet valve and valve stem, and means for engaging said stem and rotating it first in one direction and then in the opposite direction, when the valve is seated.

18. A poppet valve and valve stem, a cam, and means carried by the valve stem and engaging the cam whereby the valve is rotated, when it is seated.

In testimony whereof, I have hereunto subscribed my name this 6th day of April,

ISRAEL B. GILBERT. 

